test(mongodb+srv): add test harness for mongodb+srv tests

NODE-1295

test/tests/unit/mongodb_srv_spec_tests.js

@@ -0,0 +1,54 @@
+'use strict';
+const fs = require('fs');
+const path = require('path');
+const parseConnectionString = require('../../../lib/uri_parser');
+const expect = require('chai').expect;
+
+describe('mongodb+srv (spec)', function() {
+  const specPath = path.join(__dirname, '../spec', 'initial-dns-seedlist-discovery');
+  const testFiles = fs
+    .readdirSync(specPath)
+    .filter(x => x.indexOf('.json') !== -1)
+    .map(x => [x, fs.readFileSync(path.join(specPath, x), 'utf8')])
+    .map(x => [path.basename(x[0], '.json'), JSON.parse(x[1])]);
+
+  testFiles.forEach(test => {
+    if (!test[1].comment) {
+      test[1].comment = test[0];
+    }
+
+    it(test[1].comment, {
+      metadata: { requires: { topology: ['single'] } },
+      test: function(done) {
+        parseConnectionString(test[1].uri, (err, result) => {
+          if (test[1].error) {
+            expect(err).to.exist;
+            expect(result).to.not.exist;
+          } else {
+            expect(err).to.not.exist;
+            expect(result).to.exist;
+
+            if (test[1].options && test[1].options.replicaSet) {
+              expect(result.options.replicaset).to.equal(test[1].options.replicaSet);
+            }
+
+            if (test[1].options && test[1].options.ssl) {
+              expect(result.options.ssl).to.equal(test[1].options.ssl);
+            }
+
+            if (
+              test[1].parsed_options &&
+              test[1].parsed_options.user &&
+              test[1].parsed_options.password
+            ) {
+              expect(result.auth.username).to.equal(test[1].parsed_options.user);
+              expect(result.auth.password).to.equal(test[1].parsed_options.password);
+            }
+          }
+
+          done();
+        });
+      }
+    });
+  });
+});